/* 专利检索系统样式 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 30px;
    text-align: center;
}

header h1 {
    margin: 0 0 10px 0;
    font-size: 32px;
}

.subtitle {
    opacity: 0.9;
    font-size: 16px;
}

/* 搜索框样式 */
.search-section {
    background: white;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.search-box {
    display: flex;
    gap: 10px;
}

.search-box input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 15px;
    transition: border-color 0.3s;
}

.search-box input:focus {
    outline: none;
    border-color: #667eea;
}

.search-box button {
    padding: 12px 30px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 15px;
    cursor: pointer;
    transition: background 0.3s;
}

.search-box button:hover {
    background: #5568d3;
}

/* 统计卡片样式 */
.stats-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.stat-card h3 {
    color: #667eea;
    font-size: 14px;
    margin-bottom: 10px;
    font-weight: normal;
}

.stat-number {
    font-size: 28px;
    font-weight: bold;
    color: #333;
}

/* 标签页容器样式 */
.tabs-container {
    background: white;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 标签页按钮样式 */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
}

.tab-btn {
    padding: 10px 20px;
    background: #f5f7fa;
    color: #666;
    border: none;
    border-radius: 6px 6px 0 0;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.tab-btn:hover {
    background: #e8ecf1;
}

.tab-btn.active {
    background: #667eea;
    color: white;
}

/* 标签页内容样式 */
.tab-content {
    display: block;
}

/* 全宽筛选项 */
.filter-item.full-width {
    grid-column: 1 / -1;
}

/* 筛选面板样式（保留向后兼容） */
.filter-section {
    background: white;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.filter-section h3 {
    color: #667eea;
    margin-bottom: 15px;
    font-size: 18px;
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.filter-item {
    display: flex;
    flex-direction: column;
}

.filter-item label {
    font-weight: 500;
    margin-bottom: 5px;
    color: #666;
    font-size: 14px;
}

.filter-item input,
.filter-item select {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.filter-item input:focus,
.filter-item select:focus {
    outline: none;
    border-color: #667eea;
}

.filter-buttons {
    display: flex;
    gap: 10px;
}

/* 检索要素显示样式 */
.search-criteria {
    background: white;
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.search-criteria h3 {
    color: #667eea;
    margin: 0 0 10px 0;
    font-size: 16px;
}

.search-criteria #criteria-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.criteria-item {
    background: #f0f2ff;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 13px;
    color: #555;
    border: 1px solid #d0d4ff;
}

.criteria-item strong {
    color: #667eea;
}

.btn-primary {
    padding: 10px 20px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.3s;
}

.btn-primary:hover {
    background: #5568d3;
}

.btn-secondary {
    padding: 10px 20px;
    background: #6c757d;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.3s;
}

.btn-secondary:hover {
    background: #5a6268;
}

/* 结果统计样式 */
.results-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-export {
    padding: 8px 16px;
    background: #28a745;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.3s;
}

.btn-export:hover {
    background: #218838;
}

/* 结果表格样式 */
.results-section {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.results-table {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: #f8f9fa;
}

th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: #667eea;
    border-bottom: 2px solid #dee2e6;
    white-space: nowrap;
}

td {
    padding: 12px;
    border-bottom: 1px solid #dee2e6;
}

tbody tr:hover {
    background: #f8f9fa;
}

tbody tr:nth-child(even) {
    background: #fafafa;
}

tbody tr:nth-child(even):hover {
    background: #f0f0f0;
}

.title-cell a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.title-cell a:hover {
    text-decoration: underline;
}

td code {
    background: #f0f0f0;
    padding: 3px 8px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

/* 状态标签样式 */
.status-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.status-valid {
    background: #d4edda;
    color: #155724;
}

.status-invalid {
    background: #f8d7da;
    color: #721c24;
}

.status-pending,
.status-examining {
    background: #fff3cd;
    color: #856404;
}

.status-unknown {
    background: #e2e3e5;
    color: #383d41;
}

.btn-detail {
    padding: 5px 12px;
    background: #667eea;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-size: 13px;
    transition: background 0.3s;
}

.btn-detail:hover {
    background: #5568d3;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #dee2e6;
}

.pagination button {
    padding: 8px 16px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}

.pagination button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.pagination button:not(:disabled):hover {
    background: #5568d3;
}

#page-info {
    color: #666;
    font-size: 14px;
}

/* 加载动画样式 */
.loading {
    text-align: center;
    padding: 60px 20px;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    header h1 {
        font-size: 24px;
    }
    
    .search-box {
        flex-direction: column;
    }
    
    .filter-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-section {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .results-table {
        font-size: 14px;
    }
    
    th, td {
        padding: 8px;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}